At first, he was a shady, acting very henchmen-like to Kageyama, listening and obeying to his orders. He begins to become more of the 'good' guy, beginning to realize what kind of man Kageyama is, and going against his orders, searching around the academy for any traps, threatening to reveal them to public. Kidō also seems very logical, as he is a genius game strategist, knowing every important thing there is to know about his potential opponents. Kidō cares for his friends, and more importantly, his sister. He will do anything to help them.